Oxidation kinetics of thioglycolic acid by ferricyanide ion in acid medium

Kapoor, R. C.; Kachhwaha, O. P.; Sinha, B. P.

doi:10.1021/j100726a001

Cited by 27 publications

(7 citation statements)

References 2 publications

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“…2 Inner-sphere mechanisms may also be assumed for the oxidations by Np(), 9,10 Ce(), 9,11 Mo() and Mo(). 12 In the case of putative outer-sphere oxidants, the reaction of [Fe(CN) 6 ] 3Ϫ was originally reported without mention of metal-ion catalysis, 13 but subsequent studies showed that such catalysis is so effective that no data could be obtained describing the direct electron-transfer reaction. 14,15 With [Cr IV (dien)-(O 2 ) 2 ] the reaction is dominated by Fe III catalysis.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Sun

Stanbury

2002

J. Chem. Soc., Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Sun

Stanbury

2002

J. Chem. Soc., Dalton Trans.

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“…The reaction under the kinetic conditions indicated a consumption ratio, Δ[ 1 ]: Δ[thiol] = 1:1 (Table S1). It suggests oxidation product for all thiols is their disulphides, respectively . The most common one‐electron reduction product of 1 in our reaction condition is the μ‐amido‐μ‐hydroperoxo‐bis[tetraamminecobalt(III)}] 4+ ion, 2H (Fig.…”

Section: Resultsmentioning

confidence: 87%

Cu(II)‐catalyzed oxidation of thiols by superoxide ligated to Co^III₂

Mishra¹,

Banerjee

Mukhopadhyay

2012

J of Physical Organic Chem

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Copper(II) dramatically catalyzes the oxidation of thiols by a superoxide bridging two Co III ions. The catalyzed path overwhelmingly dominates over the uncatalysed path and is first order in the superoxo complex concentration. The first-order rate constants show a first-order dependence in [Cu 2+ ], a second-order dependence in [thiol] and linearly varies with [H + ] À3 . On the basis of observed kinetics reported here, it is proposed that Cu(II) reacts with two thiol molecules to form a Cu II (thiol) 2 complex, an electron is transferred from one ligated thiol to the Cu II center to form Cu I (thiol) and a thiyl radical. The copper(I)-thiol complex is oxidized by the conjugate base of the title complex to regenerate Cu II (thiol). A Cu II/I catalytic cycle is thus believed to be responsible for the observed catalysis. Copyright

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“…Polarigraphic [13][14] methods are used for product analysis. It is observed that the cathode wave of the product matches with a known sample of di-sulphide dimmer.…”

Section: Stoichiometrymentioning

confidence: 99%

Oxidation Kinetics and Mechanistic Studies of Thioacids by Imidazolium Dichromate

Kalla¹,

Kumar²,

Choudhary³

et al. 2021

RJC

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We have studied three thioacids(TA) namely; thio-glycollic(TGA), thio-lactic(TLA) and thio-malic(TMA) acid by imidazoliumdichromate (IDC) in dimethyl-sulphoxide (DMSO). Oxidation of these thio-acids leads to the formation of di-sulphide di-mmers. The reaction is having a unit order with the IDC. A fractional-order reaction was found w.r.t. TA. Test for free radical was not observed in this reaction. The influence of acidity was observed, which indicated the increase in the rate by the addition of acid. The study of oxidation of TLA was done in various nonaqueous media, and the influence of solvent media was examined by using some multi-parametric equation models. We postulate a mechanism in which a thio-eater is formed, which is decomposing in the rate-determining slow step.

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Oxidation kinetics of thioglycolic acid by ferricyanide ion in acid medium

Cited by 27 publications

References 2 publications

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Cu(II)‐catalyzed oxidation of thiols by superoxide ligated to Co^III₂

Oxidation Kinetics and Mechanistic Studies of Thioacids by Imidazolium Dichromate

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Oxidation kinetics of thioglycolic acid by ferricyanide ion in acid medium

Cited by 27 publications

References 2 publications

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Kinetics and mechanism of oxidation of thioglycolic acid by hexachloroiridate(iv)

Cu(II)‐catalyzed oxidation of thiols by superoxide ligated to CoIII2

Oxidation Kinetics and Mechanistic Studies of Thioacids by Imidazolium Dichromate

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Cu(II)‐catalyzed oxidation of thiols by superoxide ligated to Co^III₂